In the construction of vertical shaft, the main construction facilities include derrick, sky wheel platform, turret, sealing plate, fixed plate, hanging plate, formwork and various pipelines and cables. (1) Derrick and related facilities The commonly used pavilion derricks are of a fabricated structure, and currently the pavilion derrick has six models. Flammable materials shall not be used on the surrounding plates and ceilings of the derrick. Ensure sufficient over-winding height and umbrella entry and exit height. (2) Sealing plate, fixing plate and hanging plate The sealing plate is a working platform disposed on the ground of the wellhead, also known as a manhole cover. It is used as a working platform for lifting personnel, equipment, materials and assembly and disassembly pipelines. At the same time, it is also a structure that prevents the tool from falling down from the wellhead and protects the safety of the workers above and below the well. The fixed plate is generally located 4-8 m below the sealing disk. It mainly protects the safety of underground construction and is also used as a working platform for measuring and connecting long pipelines. The hanging plate is the main working platform in the wellbore. It is generally suspended by steel wire rope. Its main function is to protect the underground safety construction, tighten the steady rope, install the center rotary rock grab machine, and the working platform for pouring the well wall. Install the horizontal pump and water tank on the hanging plate.
Wheel loader hydraulic cylinder, usually divided into three kinds: arm cylinder, bucket cylinder, steering cylinder, different models, cylinder cylinder diameter, piston rod diameter, installation distance, stroke are different, Hanfeng company production, sales of various cylinders: Liugong, SDLG, XCMG, XGMA, Yutong, Lonking, Doosan, SEM, Lovol, etc
Classification of hydraulic system leakage:
The leakage of the hydraulic system of loader is mainly caused by the pressure difference and the gap between the hydraulic components and the pipeline.
There are two main types of oil drainage of hydraulic system of loader, one is static joint surface (that is, the fixed part, mainly including the joint of cylinder head and cylinder barrel, the joint of each pipe joint, etc.) sealed oil drainage; The second is the dynamic joint surface (that is, the sliding part, mainly including multi-way valve stem, cylinder piston and cylinder wall, between the piston rod and cylinder head guide sleeve, etc.) sealing oil leakage.
Specific performance is external leakage and internal leakage, oil leakage is mainly generated in the external of the hydraulic system, that is, from the various components of the hydraulic system to the external environment leakage of oil. Internal leakage refers to the existence of pressure difference between the high and low pressure sides and the failure of seals and other reasons, so that the hydraulic oil flows from the high pressure side to the low pressure side in the system.
Loader Hydraulic Cylinder,Hydraulic Cylinders For Front End Loaders,Tractor Front End Loader Cylinders,Front End Loader Hydraulic Cylinder Henan Hanfeng Construction Machinery Co., LTD , https://www.hf-loaderparts.com
May 07, 2023